#if 1
#include "stdio.h"

int main(){
	char c1 = 'a', c2 = 'b', c3 = 'c', c4 = '\101', c5 = '\116';
	printf("a%c b%c \t c%c \t abc \b",c1,c2,c3);
	printf("\t\b%c%c\n",c4,c5); 
	return 0;
}
#endif
